TeDe <tede_1...@gmx.de> escribió: > Hello, > > I want to import a big subset of data from one database to a new one. I > attach the two databases together and use > > insert into customers select * from source.customers where name LIKE 'x%' > > I can approximately calculate, how big the new database will grow. Is > there a way to tell SQLite to reserve an inital space or numer of pages > instead of letting the database file grow again and again? I'm looking > for a way to speed up the import.
If whole database fits in ram you can: a) make a the new database :memory based, dump it at reload to a physical one b) make a ramdisk, create there the new db, dump when done and reload to a disk one Sqlite does this reservation already, but only a few pages. Perhaps you can modify the hard coded value. > Thanks in advance, > > Thomas _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
